The American black bear in northwestern Mexico: retrieval of occurrence records
Knowledge about the distribution of most species is incomplete and fragmentary, due to few records in scientific collections and a lack of reliable observations. The American black bear (Ursus americanus) provides a good example, especially in NW Mexico. Our objective was to retrieve historical data...
| Main Authors: | , , |
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| Format: | Online |
| Language: | spa |
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Instituto de Ecología, A.C.
2011
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| Online Access: | https://azm.ojs.inecol.mx/index.php/azm/article/view/780 |
| _version_ | 1799770100449935360 |
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| author | Delfín-Alfonso, Christian Alejandro López-González, Carlos Alberto Lara-Díaza, Nalleli Elvira |
| author_facet | Delfín-Alfonso, Christian Alejandro López-González, Carlos Alberto Lara-Díaza, Nalleli Elvira |
| author_sort | Delfín-Alfonso, Christian Alejandro |
| collection | AZM |
| description | Knowledge about the distribution of most species is incomplete and fragmentary, due to few records in scientific collections and a lack of reliable observations. The American black bear (Ursus americanus) provides a good example, especially in NW Mexico. Our objective was to retrieve historical data and document current occurrence of the species in the Sierra Madre Occidental ecoregion and the Sky Islands. We consulted records in several collections and museums (national and foreign), historical and current studies (scientific articles, reports, theses, unpublished reports) and key informants.We documented 88 records (10 ?, 10 ?, and 68 of unknown sex) in a period of 120 years (1890-2010). Of the Scientific collections 54 records were obtained, 29 were obtained from the literature and five from reliable informants. Most records fall within five protected areas and six priority terrestrial regions. The states of Chihuahua and Sonora had more records collected in the period 2001-2010 and for the periods 1921-1930 and 1941-1950 records were not obtained. The low number of records available reflects the lack of studies over the distribution of the species in Mexico, and the lack of formal reports on the sighting, capture or killing of animals at the local level. We believe this work contributes substantially to identify and examine the geographic information gaps regarding the species, functioning as a baseline for decision making, mainly to apply techniques and methods that help in selecting priority sites forconservation. It is imperative to recognize the necessity to implement management and conservation of the species, in order to maintain it long-term in our country. |
| format | Online |
| id | azm-article-780 |
| institution | Acta Zoológica Mexicana |
| language | spa |
| publishDate | 2011 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | azm-article-7802022-08-09T02:06:24Z The American black bear in northwestern Mexico: retrieval of occurrence records El oso negro americano en el noroeste de México: recuperación de registros de ocurrencia Delfín-Alfonso, Christian Alejandro López-González, Carlos Alberto Lara-Díaza, Nalleli Elvira Black bear conservation distribution Mexico records Sierra Madre Occidental Distribución México Oso negro registros Sierra Madre Occidental Knowledge about the distribution of most species is incomplete and fragmentary, due to few records in scientific collections and a lack of reliable observations. The American black bear (Ursus americanus) provides a good example, especially in NW Mexico. Our objective was to retrieve historical data and document current occurrence of the species in the Sierra Madre Occidental ecoregion and the Sky Islands. We consulted records in several collections and museums (national and foreign), historical and current studies (scientific articles, reports, theses, unpublished reports) and key informants.We documented 88 records (10 ?, 10 ?, and 68 of unknown sex) in a period of 120 years (1890-2010). Of the Scientific collections 54 records were obtained, 29 were obtained from the literature and five from reliable informants. Most records fall within five protected areas and six priority terrestrial regions. The states of Chihuahua and Sonora had more records collected in the period 2001-2010 and for the periods 1921-1930 and 1941-1950 records were not obtained. The low number of records available reflects the lack of studies over the distribution of the species in Mexico, and the lack of formal reports on the sighting, capture or killing of animals at the local level. We believe this work contributes substantially to identify and examine the geographic information gaps regarding the species, functioning as a baseline for decision making, mainly to apply techniques and methods that help in selecting priority sites forconservation. It is imperative to recognize the necessity to implement management and conservation of the species, in order to maintain it long-term in our country. El conocimiento sobre la distribución de la mayoría de las especies es incompleto y fragmentado, debido a la falta de registros en colecciones científicas u observaciones fidedignas, como esel caso del oso negro americano (Ursus americanus) particularmente al NO de México. El objetivo fue recuperar datos históricos y actuales de ocurrencia de la especie en la ecorregión de la Sierra Madre Occidental y las Islas del Cielo. Se recopilaron registros de diversas colecciones y museos (nacionales y extranjeras), estudios históricos y actuales (artículos científicos, informes, tesis, reportes sin publicar) e informantes clave. Se obtuvieron 88 registros (10 ?, 10 ?, 68 sexo indeterminado) en un periodo de 120 años (1890-2010). De colecciones científicas se obtuvieron 54 registros, 29 fueron obtenidos de la literatura y cinco de informantes confiables. La mayoría de los registros se ubicaron espacialmente dentro de cinco Áreas Naturales Protegidas y seis Regiones Terrestres Prioritarias. Los Estados de Chihuahua y Sonora contaron con más registros, colectados en el período de 2001-2010; para los periodosde 1921-1930 y 1941-1950 no se obtuvieron registros. El bajo número de registros obtenidos es reflejo de la falta de estudios a lo largo de la distribución de la especie en México, y la carencia de reportes formales sobre avistamientos, capturas o muertes de los animales a nivel local. El presente trabajo contribuye sustancialmente a identificar y examinar los vacios geográficos de información respecto a la especie, funcionando como línea base para la toma de decisiones, principalmente para aplicar técnicas y métodos que ayuden a seleccionar sitios prioritarios para su conservación. Es imperante reconocer la necesidad de implementar estrategias de manejo y conservación de la especie, a fin de poder mantenerla a largo plazo en nuestro país. Instituto de Ecología, A.C. 2011-12-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Original articles Artículos originales application/pdf https://azm.ojs.inecol.mx/index.php/azm/article/view/780 10.21829/azm.2011.273780 ACTA ZOOLÓGICA MEXICANA (N.S.); Vol. 27 No. 3 (2011); 777-801 ACTA ZOOLÓGICA MEXICANA (N.S.); Vol. 27 Núm. 3 (2011); 777-801 2448-8445 0065-1737 spa https://azm.ojs.inecol.mx/index.php/azm/article/view/780/947 Derechos de autor 2011 ACTA ZOOLÓGICA MEXICANA (N.S.) http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Delfín-Alfonso, Christian Alejandro López-González, Carlos Alberto Lara-Díaza, Nalleli Elvira The American black bear in northwestern Mexico: retrieval of occurrence records |
| title | The American black bear in northwestern Mexico: retrieval of occurrence records |
| title_full | The American black bear in northwestern Mexico: retrieval of occurrence records |
| title_fullStr | The American black bear in northwestern Mexico: retrieval of occurrence records |
| title_full_unstemmed | The American black bear in northwestern Mexico: retrieval of occurrence records |
| title_short | The American black bear in northwestern Mexico: retrieval of occurrence records |
| title_sort | american black bear in northwestern mexico: retrieval of occurrence records |
| url | https://azm.ojs.inecol.mx/index.php/azm/article/view/780 |
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